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What does the spk interface mean?
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What does spk interface mean?

Jul 15, 2022 pm 01:52 PM
spk interface

The spk interface is a reserved interface for external speakers and is the abbreviation of speaker; the spk interface only appears in the monitor and can directly drive passive small speakers. Only monitors with power amplifier circuits and audio cables have this interface. , the computer’s audio output can be directly connected to this interface.

What does spk interface mean?

The operating environment of this tutorial: Windows 10 system, DELL G3 computer.

What does the spk interface mean?

spk is the abbreviation of speaker. It is a reserved interface for external speakers and can directly drive passive small speakers.

The monitor has a power amplifier circuit inside and should have an audio line input interface. The computer's audio output can be directly connected to this interface.

Interface generally refers to an abstraction that an entity provides to the outside world (can be another entity), which is used to separate external communication methods from internal operations so that it can be modified internally without affecting other external entities. The way entities interact with them is like the multiple abstractions provided by object-oriented programming.

Interfaces may also provide some sense of translation between entities that speak different languages, such as humans and computers. Because the interface is an indirect method, it will cause some extra burden compared to direct communication. The interface between humans and information machines such as computers or between humans and programs is called user interface. The interface between hardware components of information machines such as computers is called hardware interface. The interface between software components of information machines such as computers is called software interface.

USB interface: Mouse, camera, and USB disk are all devices that use USB interface. If you want to use them, they must be connected to the USB interface. The interfaces of these devices must comply with the specifications of the USB interface before they can pass through the USB interface. to use.

Extended knowledge

Physical interface The hardware interface between different devices and components in the system. For a long time, with the rapid development of science and technology and the progress of society, it has been gradually proposed that not only existing computers should be easily connected to the network, but also the various currently existing networks should be interconnected with each other to form a larger computer. network requirements.

For computers, optical drives and sound cards are both audio source devices. Generally, the output voltage of audio source equipment is small, ranging from hundreds of millivolts to two volts. If it is directly connected to a speaker, the sound may be very small or even silent at all.

And because the impedance of speakers is generally very low, most of them are between 4 and 8 ohms. The impedance of some speakers with special designs is even less than two ohms in some frequency bands, which is close to a short circuit and is extremely easy to use. The audio source equipment is overloaded, which may even cause damage to the audio source equipment in severe cases.

Therefore, a first-level power amplifier (power amplifier for short) must be added between the sound source and the speaker to amplify the weak signal output by the sound source to enough power to drive the speaker and make the speaker emit sufficient volume.

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